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Centers for Disease Control and Prevention (CDC). Seasonal Influenza (Flu)—Preventing the Flu: Good Health Habits Can Help Stop Germs. Available at:
http://www.cdc.gov/flu/protect/habits.htm. Accessed 12 January 2012.
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Centers for Disease Control and Prevention (CDC). Seasonal Influenza (Flu)—How to Clean and Disinfect Schools to Help Slow the Spread of Flu. Available at:
http://www.cdc.gov/flu/school/cleaning.htm. Accessed 12 January 2012.